/**
 * O6 Toolkit - Table of Contents
 */
.o6tk-toc {
    background: var(--o6tk-toc-bg, rgba(0,0,0,0.03));
    border: 1px solid var(--o6tk-toc-border, rgba(0,0,0,0.08));
    border-radius: 8px;
    padding: 24px 28px;
    margin-bottom: 32px;
    max-width: 480px;
}
.o6tk-toc__title {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--o6tk-toc-title-color, inherit);
}
.o6tk-toc__list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.o6tk-toc__item {
    margin: 0;
    padding: 0;
}
.o6tk-toc__item--level-1 { padding-left: 16px; }
.o6tk-toc__item--level-2 { padding-left: 32px; }
.o6tk-toc__item--level-3 { padding-left: 48px; }
.o6tk-toc__link {
    display: block;
    padding: 8px 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--o6tk-toc-link, #666);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 12px;
    transition: opacity 0.2s ease, border-color 0.2s ease;
}
.o6tk-toc__link:hover,
.o6tk-toc__link.is-active {
    color: var(--o6tk-toc-active, var(--o6tk-primary, #6366f1));
    border-left-color: var(--o6tk-toc-active, var(--o6tk-primary, #6366f1));
}
.o6tk-toc__link.is-active {
    font-weight: 600;
}

.o6tk-toc__link:focus-visible {
    outline: 2px solid var(--o6tk-toc-active, var(--o6tk-primary, #6366f1));
    outline-offset: 2px;
    border-radius: 2px;
}

@media (max-width: 768px) {
    .o6tk-toc { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .o6tk-toc__link { transition: none; }
}

@media print {
    .o6tk-toc { break-inside: avoid; border: 1px solid #ccc; }
}